If you look at the 3rd photo, you can see the button to the left, beside the larger frame size selector knob. I have the tab that broke off and it can either be super glued back on or be used without it (your fingers and spin the button easily). That is the only thing wrong with this back. Please message me any questions if you are unsure of how this works and how this tab effects the performance. Cosmetically the exterior is showing some use but overall clean and working great.
The back itself, take-up reel, frame mask (not pictured), and the broken tab. Attached are photos taken with this back on Ilford HP5+ and Velvia 50, all with different 4x5 lenses. Please ask any questions and I will respond ASAP! The item "Sinar Vario 6x4.5, 6x6, 6x7, 6x9, 6x12 Roll Film Back for 4x5 Cameras, READ" is in sale since Tuesday, July 28, 2020.
This item is in the category "Cameras & Photo\Film Photography\Film Backs & Holders". The seller is "ja_819730" and is located in Pasadena, Maryland. This item can be shipped to United States.